PTEROMYS. 299 



terminal grey or white band which produces a very obscure, but minutely punc- 

 tulated appearance to the fur. The upper surface of the parachute is less glossy, 

 and the hairs have no pale bands. The under surface is sparsely clad witb woolly 

 chestnut-brown fur ; the throat, the centre of the belly and the outer part of the 

 membrane being most thickly clad. Cheek-bristles are present, but they are feeble 

 and few in number. The tail is bushy. 



Inches. 



The length of body 13-00 



„ „ tail 11-50 



The edentulous interspace of the lower jaw is somewhat similarly shaped to P. 

 elegans. The teeth differ from those of any other Pteromys I have observed, 

 in the peculiar roughened character of the crown, wliich is covered with fine, wavy 

 striEe which run down from the apices of the ridges and tubercles. 



Pteromys tephromelas, Giinther. 



Pteromys tephromelas, Giinther, Proc. Zool. See. Lend. 1873, p. 413, pi. xxxviii. 



This is also a small black species. The fur is brownish-black at its base, 

 and greyish in its upper third, the hairs being broadly black-tipped and glossy. 

 This grey under colour is restricted to the anterior half of the back and to the head ; 

 the hairs of the upper surface of the limbs, parachute and tail being wholly lustrous 

 brown-black. The hair of the under surface is sparse, but thickest on the mesial line 

 and on the outer portion of the wing-membrane. The central line is greyish, and 

 also the under surface of the parachute. The cheek bristles are present, but they 

 are feeble and not numerous. The tail is long and narrow, not distichous, and 

 equalling or rather exceeding the length of the body. The skull is of moderate 

 size, and the incisors are pale-yellow. The infra-orbital foramen is an oblique slit 

 which is but little forwardly projected. 



Inches. 



The length of body (?) 10 



„ „ tail . . . . . . . . . .11 



This flying squirrel has been found in Pinang and Malacca. 



Pteromys HORsriELDii, Waterhouse. 



Pteromys horsfieldii, Waterhouse, Proc. Zool. Soc. 1837, p. 87 ; Wagner, Schreber, Saugeth. 



Suppl. vol. iii. 1843, p. 228 ; Schinz, Syn. Mamm. vol. ii. 1845, p. 52. 

 Pteromys aurantiams, Wagner, Miinchen, Gelehrte. Anz. 1841, No. 54 ; Wagner, Schreber, Saugeth. 



Suppl. vol. iii. 1843, p. 225; Schinz, Syn. Mamm. vol. ii. 1845, p. 52; Blyth, Journ. 



As. Soc. Beng. vol. xvi. 1847, p. 867. 

 Sciurojjterus korsfieldii, GrsLjjJjisi Mamm. B. M. 1843, p. 134; Cantor, Journ. As. Soc. Beng. 



vol. XV. 1846, p. 253 ; Blyth, Journ. As. Soc. Beng. 1847, vol. xvi. p. 867 ; Hid. vol. xxviii. 



1859, p. 278. 

 Sciuropterus sagitta, Mvlhr \mi Schhgel, Yerhandl. 1839-44 (in part), p. 109; Blyth, Journ. As. 



Soc, Beng. 1855, vol. xxiv. p. 187. 



